Bladder dysfunction in the spontaneously diabetic male Abyssinian-Hartley guinea pig

Area of Science:

• Urology
• Diabetology
• Animal Models

Background:

• Spontaneously diabetic adult male Abyssinian-Hartley guinea pigs develop bladder complications.
• Unlike chemically induced diabetes models, these animals show bladder dysfunction without significant diuresis.

Purpose of the Study:

• To investigate bladder hypertrophy and voiding dysfunction in spontaneously diabetic guinea pigs.
• To understand the functional changes in the diabetic guinea pig bladder.

Main Methods:

• Cystometry was used to assess bladder pressure and voiding dynamics.
• Comparison of voiding patterns between diabetic and control guinea pigs.

Main Results:

• Diabetic guinea pigs exhibited bladder hypertrophy and voiding dysfunction.
• Despite similar daily urine volume, diabetic animals had larger voiding volumes and longer intervals between voids.
• Cystometry revealed higher intraluminal bladder pressure but shorter voiding pressure duration in diabetic guinea pigs.
• A decreased contractile response of the diabetic bladder base was observed.

Conclusions:

• The spontaneously diabetic guinea pig is a relevant model for studying bladder dysfunction in diabetes.
• Reduced bladder base contractility may underlie the observed bladder hypertrophy and voiding issues in this model.